Liao Xian-Heng, Huang Hui-Fen, Tang Bian-Yu, Wan Xiao-Wen. A HIGHLY RELIABLE AND LONG LIFE CATHODE[J]. Journal of Electronics & Information Technology, 1982, 4(1): 69-70.
Citation:
Liao Xian-Heng, Huang Hui-Fen, Tang Bian-Yu, Wan Xiao-Wen. A HIGHLY RELIABLE AND LONG LIFE CATHODE[J]. Journal of Electronics & Information Technology, 1982, 4(1): 69-70.
Liao Xian-Heng, Huang Hui-Fen, Tang Bian-Yu, Wan Xiao-Wen. A HIGHLY RELIABLE AND LONG LIFE CATHODE[J]. Journal of Electronics & Information Technology, 1982, 4(1): 69-70.
Citation:
Liao Xian-Heng, Huang Hui-Fen, Tang Bian-Yu, Wan Xiao-Wen. A HIGHLY RELIABLE AND LONG LIFE CATHODE[J]. Journal of Electronics & Information Technology, 1982, 4(1): 69-70.
In this paper, a highly reliable and long life cathode is described. The emission cur-rent density of the cathode is higher than 400 mA/cm2 at 730℃, and has a value of 50-70 mA/cm2 at 550℃. The life of the cathode under different conditions is over than 60000 hrs. The result of oxygen poisoning test is also given.